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Interaction of High Temperature Superconductors with Conductive Oxides

  • A. C. Greenwald
  • E. A. Johnson
  • J. S. Wollam
  • A. J. Gale
  • N. K. Jaggi

Abstract

Transparent conductive oxides, SnO2 and TiO2, were tested as contacts to YBa2Cu3O7 and BiSrCaCu2O4. After sintering the superconducting material, tin diffused into the bismuth material preferentially replacing bismuth and calcium. Tin diffused into the 1-2-3 material but did not show preferential replacement. Titanium diffused into the 1-2-3 compound preferentially replacing copper. Contact resistance could not be measured as the films were not superconducting after sintering. Titanium dioxide did act as a partial diffusion barrier on top of the bismuth compound when the film was not sintered. The results imply that surface chemistry dominates the performance of transparent oxide contacts and diffusion barrier layers for the different perovskite superconductors.

Keywords

Contact Resistance Transparent Conductive Oxide Electrical Contact Resistance High Energy Beam Diffusion Barrier Layer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • A. C. Greenwald
    • 1
  • E. A. Johnson
    • 1
  • J. S. Wollam
    • 1
  • A. J. Gale
    • 2
  • N. K. Jaggi
    • 3
  1. 1.Spire CorporationBedfordUSA
  2. 2.Ion OpticsStonehamUSA
  3. 3.Northeastern UniversityBostonUSA

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